已然形 izenkei - perfective form
(~e, ~re, 読めば yomeba when I read, 水飲めば midzu nomeba had I drunken water )

命令形 meireikei - commanding form
(~e, -ru, 生きろ/よ ikiro/yo Live!, 行けike Go!, 来いkoi Come!)
Note that 命令形 refers to both the grammatical inflected form of a verb (生き） and the final commanding form of the verb as used in speech（生きろ/生きよ）.